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Governor Schwarzenegger applauds energy-saving
efforts
Indian Well City Hall INDIAN WELLS, CA, JANUARY
14, 2009 — Cree, Inc. (Nasdaq: CREE), a market leader in LED lighting, announced that Indian Wells, California,
has joined the LED City® initiative, an international program that promotes
the deployment of energy-efficient LED lighting. The city has converted much of the lighting in City Hall, the
Emergency Operations Center and the Public Works Maintenance Facility to LED
lighting. Indian Wells is home to several world-class resorts and is internationally recognized for hosting
high-profile golf and tennis events.
“It is initiatives like these that have made California a world leader in energy efficiency,”
said Governor Arnold Schwarzenegger. “I applaud the City of Indian Wells and the University of California, Davis
for promoting the kinds of energy-efficiency measures that California needs to meet our aggressive goal of
33-percent renewable energy by 2020.” 
Indian Wells meeting room
All circular recessed lighting in the buildings was converted to the Cree LR6 LED light,
reducing electricity consumption by 80 percent. The City of Indian Wells plans to evaluate LED lighting for
other municipal lighting applications to further increase its energy savings.
“The City of Indian Wells takes being green seriously,” said Mayor Larry Spicer. “We are known
worldwide for our extraordinary landscape and pristine environment, and we make stewardship of these resources a
top priority. The recessed LED lighting we have installed throughout our municipal buildings cuts our energy
consumption for those lights by 80 percent and is targeted to last for 12 to 25 years, significantly reducing
the time and money we spend changing and tossing away bulbs.”
“We collaborated with Southern California Edison for these initial LED lighting
installations,” noted Greg Johnson, Indian Wells city manager. “They gave us a directive to save energy. We
conducted an initial evaluation of many different efficient lighting solutions, and the Cree LR6 LED recessed
light was far superior to the others.”
About LED City
The LED City is an expanding community of government and industry parties working to evaluate,
deploy and promote LED lighting technology across the full range of municipal infrastructure to:
* Save energy
* Protect the environment
* Reduce maintenance costs
* Provide better light quality for
improved visibility and safety.
According to the U.S. Department of Energy, 22 percent of electricity used in the U.S. powers
lighting. In a world with soaring energy prices based on the availability and control of fossil fuels, and with
growing concern about sustainability of the environment, a revolution in lighting is long overdue.
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PORTLAND REPLACES 1000 TRAFFIC INTERSECTION SIGNALS WITH LED LIGHTS, SAVING MILLIONS OF KILOWATT-HOURS PER
YEAR
SUMMARY
The City of Portland has replaced all red and green traffic signal incandescent light bulbs with energy saving LED
lights (Light Emitting Diode modules). 13,382 incandescent traffic light bulbs were replaced with LED modules,
which save approximately 4.75 million kilowatt-hours per year. This is equivalent to enough energy savings to power
over 350 Portland homes each year. The replacement to LED lights saves the city of Portland $335,000 annually in
signal power costs.
WHAT IS IT?
There are three principle advantages to replacing municipal traffic lights with LED lights:
- LED modules represent an 83% to 88% percent reduction in energy consumption over standard light bulbs.
- LED modules are brighter and they emit light more evenly, making them more visible in foggy
conditions.
- LED traffic lights last for 100,000 hours, compared to incandescent bulbs that last only 8,000 hours
because their filaments burn out. Replacing traffic bulbs is not only expensive but inhibits traffic flow.
Burned out lights are hazards, thus reducing traffic safety. LED lights avoid these scenarios all
together.
HOW DOES IT WORK?
- Prior to the development of the LED modules, the City of Portland utilized incandescent light bulbs for
their traffic signal indications. While these light bulbs were rated for heavier duty than the typical
household light bulb, the City had to replace all light bulbs at once every two years. ‘Group relamping’
required a two-vehicle maintenance operation: one-bucket truck and one traffic-control pickup. The bucket truck
consisted of a crewmember elevated inside a bucket to the height of the traffic signal, while the
traffic-control pickup followed suit with a warning sign. Roads are not actually closed off but traffic does
slow down. This process is expensive and time consuming.
- In October of 2001, the City of Portland’s Signal and Street Lighting Division hired an electrical
contractor, E.C. Construction, to perform the LED conversion program. Installing the new LED lights requires
minor modifications to the signal head to accommodate the LED modules. Because an incandescent light bulb sits
within a base that is surrounded by a reflector, both the base and the reflector had to be removed for the
installation of the LED module. The exterior of the signal head stays exactly the same, only the interior is
altered to position the new bulb.
- By February 2002, the contractor had installed 13,382 LED modules in only 4 months. Each 142-watt
incandescent light bulb was replaced with a 17-watt LED module and each 59-watt incandescent light bulb was
replaced with a 10-watt LED module.
- The conversion project cost the City of Portland approximately $2.2 million US dollars. The project
received $715,519 US dollars in energy incentive rebates from local power utilities.
- The City of Portland came up with an innovative way to finance the program. Because the City’s Signal and
Street Lighting Division is a public agency and therefore cannot collect tax credits to help fund its programs,
the Division partnered with Dooling Lease Management Corp. The private leasing company agreed to finance the
program and was thus entitled to receive an Oregon State energy tax credit of $500,000. Essentially, the City
of Portland leases the LED lights from Dooling Lease Management Corp. The City pays off the lease in monthly
installments of $30,000. The lease will be paid off by August 2007.
NEXT STEPS
- The current LED modules are reaching the end of their useful life, which is typically 7 years. The City
anticipates replacing all traffic signals with new LED lights in the fall of 2007. The new LED modules will be
more efficient than the existing LED modules, using about 75% as much power.
- Future replacement projects will cost less because the cost for LED modules is approximately 50% less today
than in 2001.
- The City is not replacing the yellow incandescent indications because the energy savings does not cover the
conversion cost. Also, because yellow indications are only activated briefly during each signal cycle, the
overall savings potential is not very high.
APPLICATION
- A city can implement this program via it’s own City agency or by hiring an electrical contractor such as
Portland did.
- Innovative financing mechanisms can be applied, such as partnering with a private company that agrees to
fund program.
- The conversion program will save ‘group relamping’ costs and off-hour call-out costs for burn out lights
because of the increased life of the LEDs.
New Manhattan office tower demonstrates how to cut energy usage dramatically with advanced lighting
system.
As the free flow of cash slows for corporate America and the call for green corporate behavior rises, a new
Manhattan office tower stands as a stellar example of how companies can build smart to save both money and
energy.
To reduce America’s appetite for energy consumption, it makes sense to attack the biggest sources of the
problem first. With office buildings and other commercial structures — all ravenous users of electricity —
the place to start is the lighting. Go into any office building and, according to the U.S.
Energy Information Administration (the independent statistical and analytical agency within the U.S. Department
of Energy), it’s lighting that accounts for the largest source of electricity usage, more than HVAC or office
equipment. The federal agency says lighting alone accounts for 44 percent of the typical office building’s
electricity consumption (and about 56 percent for educational buildings).
But anyone who encounters The New York Times Building, a dazzling 52-story Renzo Piano design in Manhattan,
will find this formula turned on its head. Ingenuity and the Times Company’s commitment to sustainability have
delivered stunning results in lighting energy efficiency.
At the beginning of the project, after examining the lighting options on the market, the Times Company’s
building team began to ask questions and conduct research on how lighting could be accomplished more
efficiently.
This research led to the Building Technologies Department at Lawrence Berkeley National Laboratory where, after
much discussion, the Times Company began to pursue a dynamic lighting system that would allow departments to
set their own light levels and would allow artificial light to be used as a supplement to daylight. In so
doing, the team constructed a replica of the southwest corner of the new building and conducted rigorous
testing of competing technologies and products to decide which would best meet the building’s lighting
needs.
Ultimately, the Times Company selected Quantum total light management, designed and manufactured by Lutron
Electronics Co., Inc., to control and manage the lighting for its new headquarters.
“We designed our building to use 1.28 watts per square foot of lighting power. With Quantum, it’s using only
0.38 — that’s 70 percent less,” says Glenn Hughes, director of construction for The New York Times Company
during the design, installation and commissioning of The New York Times Building. “The energy savings is
stunning.”
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